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PDF FAN7315 Data sheet ( Hoja de datos )
| Número de pieza | FAN7315 | |
| Descripción | LCD Backlight Inverter Drive IC | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de FAN7315 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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FAN7315
LCD Back Light Inverter Drive IC
www.fairchildsemi.com
Features
• Wide Dimming Range
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• High Efficiency Single Stage Power Conversion
• Wide Input Voltage Range 7.4V to 20V
• Back Light Lamp Ballast and Soft Dimming
• Few External Components
• Precision Voltage Reference Trimmed to 2%
• ZVS full-bridge topology
• Soft Start
• PWM Control at fixed frequency
• Analog, Burst Dimming Function
• Open Lamp Protection
• Open Lamp Regulation
• Short Lamp Protection
• Thermal Protection
• 20 Pin SSOP
Description
The FAN7315 provides all the control functions for a
series parallel resonant converter and also contains a pulse
width modulation (PWM) controller to develop a supply
voltage. Typical operating frequency range is between
30kHz and 250kHz depending on the CCFL and the
transformer's characteristics.
20-SSOP
©2004 Fairchild Semiconductor Corporation
Rev. 1.0.1
1 page  
FAN7315
Electrical Characteristics
Vcc=12V, for typical values Ta=25°C, for min/max values Ta is the operating ambient temperature range with
-40°C ≤ Ta ≤ 85°C and 7.4V ≤ Vcc ≤ 20V, unless otherwise specified.
Characteristics
Symbol Test Condition
REFERENCE SECTION
Load Regulation
∆V25load
0 ≤ I25 ≤ 3mA
Line Regulation
∆V25line 7.4V ≤ VCC ≤ 20V
2.5V Regulation Voltage
V25 -
www.DataSheet4UO.cSoCmILLATOR SECTION(MAIN)
Oscillation Frequency
fosc Ta=25°C, Ct = 330pF,
Rt = 45k
Ct = 330pF, Rt = 45k
CT High Voltage
Vcth
-
CT Low Voltage
Vbctl
-
OSCILLATOR SECTION(BURST)
Oscillation Frequency
foscb Ctb = 6.8nF, Rt=45k
BCT High Voltage
Vbcth
-
BCT Low Voltage
Vbctl
-
ERROR AMP SECTION
Error Amp Transconductance(Note1)
Gm Va = 1~2.5V
Output Sink Current
lsin EA_OUT = 1V
Output Source Current
lsur EA_OUT = 1V
Open Lamp Regulation Current
Iolr OLR=2.5V
EA_OUT High Volgate
Vea_outh
SOFT START SECTION
Soft Start Current
Iss S_S=0V
Soft Start Clamping Voltage
Vssh
-
PROTECTION SECTION
Open Lamp Protection Voltage
Volp
-
Open Lamp Regulation Voltage
Volr
-
Short Circuit Protection Voltage
Vscp
-
Thermal Shutdown On Temp.(Note1)
TSDon
-
TSD Hysterisis(Note1)
TSDhy
-
UNDER VOLTAGE LOCK OUT SECTION
Start Threshold Voltage On
Vthon
-
UVLO Hysteresis
Vhys
-
Start Up Current
Ist VCC = Vth-0.2V
Operating Supply Current
Iop VCC = 12V
Stand-by Current
Isb VCC = 12V, ENA=0V
Min.
-
-
2.44
93
89
-
-
150
-
-
100
44
33
160
2.2
3.5
2.2
245
1.8
1.75
130
-
5.2
100
48
-
55
Typ.
2
2
2.49
100
100
1.95
0.5
191
2
0.5
360
73
50
240
2.5
5.2
2.55
300
2
2
150
30
6.3
300
85
-
80
Max. Unit
25 mV
25 mV
2.54 V
107 kHz
111 kHz
-V
-V
232 Hz
-V
-V
600 umho
100 uA
67 uA
320 uA
2.8 V
6.9 uA
2.9 V
425
2.2
2.25
170
-
mV
V
V
°C
°C
7.4 V
500 mV
122 uA
2 mA
105 uA
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet FAN7315.PDF ] | |
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